Step 3: Assign an EIP and Bind It to an ECS

Scenarios

You can assign an EIP and bind it to an ECS so that the ECS can access the Internet.

Assigning an EIP

1. Log in to the management console.
2. Click in the upper left corner and choose Network > Elastic IP.
3. On the displayed page, click Assign EIP.
4. Set the parameters as prompted.

   Table 1 Parameter descriptions

   Parameter	Description	Example Value
   Region	Regions are geographic areas that are physically isolated from each other. The networks inside different regions are not connected to each other, so resources cannot be shared across different regions. For lower network latency and faster access to your resources, select the region nearest you. The region selected for the EIP is its geographical location.	N/A
   EIP Type	Dynamic BGP: Dynamic BGP provides automatic failover and chooses the optimal path when a network connection fails.	Dynamic BGP
   Billed By	The following bandwidth types are available: Bandwidth: You specify a maximum bandwidth and pay for the amount of time you use the bandwidth. This is suitable for scenarios with heavy or stable traffic. Traffic: You specify a maximum bandwidth and pay for the total traffic you use. This is suitable for scenarios with light or sharply fluctuating traffic. Shared Bandwidth: The bandwidth can be shared by multiple EIPs and is suitable for scenarios with staggered traffic.	Bandwidth
   Bandwidth	The bandwidth size in Mbit/s.	100
   EIP Name	The name of the EIP.	eip-test
   Bandwidth Name	The name of the bandwidth.	bandwidth
   Tag	The EIP tags. Each tag contains a key and value pair. The tag key and value must meet the requirements listed in Table 2.	Key: Ipv4_key1 Value: 3005eip
   Quantity	The number of EIPs you want to purchase.	1

   Table 2 EIP tag requirements

   Parameter	Requirement	Example Value
   Key	Cannot be left blank. Must be unique for each EIP. Can contain a maximum of 36 characters. Can contain letters, digits, underscores (_), and hyphens (-).	Ipv4_key1
   Value	Can contain a maximum of 43 characters. Can contain letters, digits, underscores (_), periods (.), and hyphens (-).	3005eip

5. Click Create Now.

Binding an EIP

1. On the EIPs page, locate the row that contains the target EIP, and click Bind.
2. Select the instance that you want to bind the EIP to.

3. Click OK.